{"product_id":"mardarth-rear-leaf-spring-bracket-kit-for-silverado-sierra-1500-1999-2015-direct-fit-hangars-shackles","title":"Mardarth Rear Leaf Spring Bracket Kit for Silverado\/Sierra 1500 1999-2015 — Direct-Fit Hangars \u0026 Shackles","description":"\u003cp\u003e\u003cstrong\u003eMardarth 12474021 rear leaf spring bracket kit is a direct-fit replacement hangar and shackle assembly engineered to restore proper rear suspension alignment on compatible GM trucks and SUVs.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eIf your Silverado, Sierra 1500 or related GM vehicle shows sagging, uneven ride height, or noisy rear suspension, replacing worn leaf spring brackets and shackles often solves the issue quickly. This kit is made as a direct replacement for OE mounting points and is designed to match fitment for model years listed by the manufacturer. It’s built from durable materials and supplied as left and right hangers with shackles for both sides, which reduces installation time compared with sourcing parts individually.\u003c\/p\u003e\n\n\u003ch3\u003eWhich vehicles and part numbers does this kit fit?\u003c\/h3\u003e\n\u003cp\u003eThe kit is compatible with 1999–2015 Chevrolet Silverado and GMC Sierra 1500 models and several full-size GM SUVs and trucks from select years. It replaces original OEM hangars and shackles, matching common part numbers so you can confidently cross-reference during purchase.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eFitment: Silverado\/Sierra 1500 (1999–2015)\u003c\/li\u003e\n  \u003cli\u003eAlso fits: 2007–2009 Escalade, Avalanche, Suburban, Tahoe, Yukon\u003c\/li\u003e\n  \u003cli\u003eCross-references: 12474021, 722032, M22421, 338-2163\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow does this bracket kit affect ride and handling?\u003c\/h3\u003e\n\u003cp\u003eFresh leaf spring hangars and shackles restore the factory geometry of the rear suspension, which helps stabilize ride height and reduces irregular tire wear. While this kit doesn't alter spring rates, replacing worn brackets eliminates excessive play that causes clunking and inconsistent handling.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eRe-establishes correct spring anchor points\u003c\/li\u003e\n  \u003cli\u003eReduces lateral and vertical play in the rear axle\u003c\/li\u003e\n  \u003cli\u003eMinimizes noise caused by loose or corroded mounts\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat should I expect during installation?\u003c\/h3\u003e\n\u003cp\u003eInstallation is intended to be bolt-on using existing frame holes and hardware locations; some basic tools and a jack or lift are recommended. Corroded bolts or seized fittings on older trucks may require penetrating oil, heat, or replacement fasteners. The kit is designed for a direct swap to streamline labor time for DIYers and professional shops alike.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eDirect-fit design for factory mounting points\u003c\/li\u003e\n  \u003cli\u003eLeft and right hangars plus shackles included\u003c\/li\u003e\n  \u003cli\u003eMay require removal of rusted bolts on older vehicles\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat materials and warranty coverage come with the Mardarth kit?\u003c\/h3\u003e\n\u003cp\u003eThe brackets and shackles are manufactured from robust metals chosen for load-bearing durability and resistance to everyday road exposure. Mardarth backs this kit with a one-year guarantee; contact customer service if you encounter fitment or quality issues so they can assist with a resolution.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eHigh-strength metal construction for sustained use\u003c\/li\u003e\n  \u003cli\u003eEngineered for direct replacement and long service life\u003c\/li\u003e\n  \u003cli\u003e1-year guarantee with customer support for issues\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: This rear leaf spring bracket kit is aimed at owners and mechanics working on 1999–2015 Silverado\/Sierra 1500 trucks and the listed GM SUVs who need a reliable, direct-replacement hanger and shackle solution. It suits DIY installers with moderate mechanical experience and professional shops wanting a dependable aftermarket option that restores factory suspension geometry without custom modification.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Does this kit include both left and right hangers?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes, the kit includes left and right rear leaf spring hangers plus shackles for both sides.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Is this a direct replacement for OE part 12474021?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes, it replaces OE numbers including 12474021 and compatible equivalents listed by the manufacturer.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Mardarth","offers":[{"title":"Default Title","offer_id":48085873459358,"sku":"B09JMSRDX4","price":47.88,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/mardarth-rear-leaf-spring-bracket-kit-front-view.jpg?v=1785878860","url":"https:\/\/northtrailauto.ca\/products\/mardarth-rear-leaf-spring-bracket-kit-for-silverado-sierra-1500-1999-2015-direct-fit-hangars-shackles","provider":"North Trail Auto","version":"1.0","type":"link"}